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Find Your Pi Day

March 15, 2016Kelly Tenkely2 Comments8147 views

What it is: Find Your Pi Day is a simple site from Wolfram where students can type in any number (like a birth date) and the site will tell you where that number falls within the Pi sequence. All dates fall somewhere within the first 10 million digits in the sequence. The place in the sequence is depicted by a spiral that goes in and out to display the beginnings and ends of such long digit sequences.

How to integrate Find Your Pi Day in your classroom: Find Your Pi Day is a neat site to generate conversation and inquiry into Pi. This is a fantastic place to begin exploration of Pi. Students can learn about the mathematical sequence and the science of Pi in this background Wolfram blog post.

Tips: For some extra fun and discussion, have a look at Vi Hart’s lighthearted “rants” about Pi.

Virtual Spirograph

June 29, 2009June 30, 2009Kelly TenkelyLeave a Comment2997 views

What it is: Remember Spirographs? I had a set that could keep me busy for hours. As I was searching back through websites to align with curriculum, I found the virtual Spirograph on Math Playground. Virtual Spirograph lets your students determine colors, pen positions, and the radius of the circles. Students can then draw the Spirograph adding layers. One of the best features of this fun site is the “where’s the math” button that shows a break down of the math involved in the spirograph activity.

How to integrate Virtual Spirograph into the classroom: Virtual Spirograph is a great way to teach practical (and fun) math. Students will learn about epicycloids and what happens when they adjust radius and reflector placements. Virtual Spirograph will help students visualize difficult math concepts and create fun artwork in the process. This is a great site to introduce with an interactive whiteboard or projector. Students can take turns adjusting the pen position and radii. Encourage other students in the class to predict what the epicycloids will look like based on the radii chosen and the pen position. Then click draw and discuss what actually happened. Virtual Spirograph can be set up as a math center for students to visit in the one or two computer classroom. Students can visit the center in small groups and take turns predicting the outcome as a partner adjusts the pen position and radii.

Tips: The Virtual Spirograph relies on a flash player, make sure you have one before using this site with students.

Leave a comment and tell us how you are using Virtual Spirograph in your classroom.